Bubble blower



June 12, 1934. H, BLQXQM 1,962,801

BUBBLE BLOWER Filed June 13, 1932 I I INYENII'OR ATTORNEY Patented June12, 1934 UNITED STATES PATENT, OFFICE BUBBLE BLOWER.

Harvey Lynn Bloxom, Fort Dodge, Iowa Application June 13, 1932, SerialNo. 616,968

. 1 Claim.

This invention relates to a bubble blower. An object of the invention isthe provision of a device in which a reservoir is provided with a bubblesolution connected by a restricted port with a tube through which air isforced for creating a plurality of successive bubbles at one end of thetube, the solution from the reservoir passing through the port to thetube either under the influence of the force of gravity or by a pressuremechanically created on the fluid.

Another object of the invention is the provision of a bubble blower inwhich a tube is employed for carrying a stream of air under pressurepast a port through which is discharged a bubble-producing solution froma reservoir,

the bubbles being formed in succession and at a rapid rate from one endof the tube.

A further object of the invention is the provision of a device whichwhen supplied with the proper bubble solution will produce a continuousshower of bubbles as long as the air pressure is properly applied forcarrying the solution through a tube as it is discharged from arestricted port in communication with a reservoir, it being necessary tomaintain a difference in pressure between the surface of the liquid andthe port where the solution enters the tube, the pressure may be eitherthe natural, hydrostatic pressure of the liquid, pneumatic pressure fromthe air stream applied to the surface of the liquid, or pressure may beapplied directly by means of a piston, a diaphragm, or a bulb.

This invention will be best understood from a consideration of thefollowing detailed descrip- 'tion, in view of the accompanying drawingforming a part of the specification; nevertheless, it is to beunderstood that the invention is not confined to the disclosure, beingsusceptible of such changes and modifications which shall define nomaterial departure from the salient features of the invention asexpressed in the appended claim.

In the drawing: Figure 1 is a longitudinal vertical section of one formof the invention,

Figure 2 is a longitudinal vertical section of a modified form of theinvention, and

Figure 3 is a vertical longitudinal section of 59 a further modifiedform of the invention.

Referring more particularly to Figure 1, 10

designates a reservoir having an upper end 11 open to the atmosphere. Astem 12 is in communication at 13 with the reservoir 10. A cen- 5 tralpassage 14 of the stem is in axial alignment with the reservoir and boththe reservoir and the stem are normally located in a vertical position.

A bubble-producing tube 15 is in communication with the passage 14 ofthe stem 12 through 66 a restricted port 16.

One end 1'? of the tube 15 is connected to a tube 1 8 which has amouth-piece 19 adapted to be received by the mouth of the operator forforcing a stream of air under pressure through 6 5 the member '18 andtube 15 and past the restricted port or orifice 16. It will be notedthat the axis of the tube 15 is located at an acute angle to the axis ofthe stem .12 so that while the outer or bubble-forming end 20 of thetube (0- 15 is located in a lower horizontal plane than the end 17, thestem 12 and the reservoir 10 may be maintained in a vertical position.

All of the elements of the; construction disclosed in Figure 1 may becast in a single piece and maybe formed of metal, composition mate. Irial, or any other material suitable for the purpose.

The operation of the device shown in Fig. 1 is as follows: The reservoir10 is filled with a 0; suitable solution capable of producing bubblesand this solution fills the passage 14 and through the port 16 tends toenter the tube 15 but due to the fact that the port 16' is considerablyrestricted soap solution will not fiow 35-: freely through said portinto the tube 15 and be discharged from the lower end 20 of the tube 15.

The soap solution in the reservoir 10 tends to flow by gravity throughthe port 16 so that 9 0 when air pressure is forced through the tubes 18and 15, and is forced past the restricted port 16, the solution will becarried through the tube 15 and collected at the free end 20.

The shape of the film which is produced at a5; the lower end 20 of thetube 15 is shown in dotted lines so that there will be a series ofenlargements along the tubular film 21 and. these will break off,producing a shower of bubbles.

An individual characteristic of this construction 190 is that instead ofbubbles being formed directly on the end of the tube 15 as is usual, thebubbles form, as shown at 22, at the end of the long tubular film 21 ofthe bubble solution which is carried by the smooth flow of the airstream towards the extreme end of the tubular film. Surface tensiontends to reduce the diameter of the film in places. The resultingpressure changes with the aid of surface tension provide for aconstriction and distension of the 119 film in such a Way that the filmbreaks up into a shower of disconnected bubbles of approximately uniformdiameter. There will be no. break in the stream of bubbles as long asthe solution and the air pressure are properly supplied. If the filmbreaks, the solution passing slowly through the orifice 16 into thetubular member 15 will collect at the end 20 of the tube 15 and thusseal it with fluid, so that upon renewing" the air pressure the bubbleswill start automatically.

Figure 2 produces similar results to that shown in Fig. 1 but in thisdevice dependence upon the force of gravity is eliminated and airpressure is supplied directly to the surface of the liquid of thereservoir.

The reservoir 25 is supported by a projection 26 depending from abubble-producing tube 27. The upper end 28 of the reservoir 25 isadapted to have a neat fit with the lower end of the member 26 so thatthe'reservoir may be removed from the member 26 as desired.

The tubular member 29 is connected at 30 with the upper end 31 of thetube 27. The lower or outer end 32 of the tube 2'7 is adapted to producethe bubbles created by the film of soap solution and the stream of air.

The stem 33 has a restricted port at 34 for placing the stem incommunication with the tube 27 at-the upper end of said stem. The lowerend of the stem, as shown at 35, is in open communication with thereservoir 25 adjacent its lower end.

A passage 36 connects the tube '27 with the tubular member 26 so thatwhen air is forced through the tube 27 it will enter the passage 36 andexert a pressure on the surface of the liquid in the reservoir 25. 'Arib 38 is formed integrally of the tube 27 between the passage and ofthe port 34 to provide a restricted passage 39 between the upper andlower ends of the tube 31.

When air is forced through the tube 27 from. the tube 29 some of thisair will pass into the tubular member 26 and exert a pressure upon thesurface of the soap solution in the reservoir 25. This soap solutionwill pass upwardly through the restricted passage in the stem 33 and bedischarged at the port 34 in the tube 2'7. The portion of the air whichis forced through the passage 39 is discharged past the port 34 carryingthe soap solution to the free end 32 of the tube 27, thereby creating ashower of bubbles in the same manner as described for the constructiondisclosed in Figure 1.

Figure 3 discloses a construction which gives like results with theconstruction shown in Figs. 1 and 2. A tube 40 is connected to a tube 41through which air is adapted to be supplied under pressure. The oppositeend 42 of the tube 40 is adapted to form the bubbles.

'A stem 43 has an axial passage 44 which is incommunication with tube 40by means of a restricted port 45. v

A reservoir 46 in the shape of a rubber bulb is connected at 47 with thestem 43. The bulb 46 is adapted to be supplied with the soap solutionand when pressure is exerted on the walls of the bulb the solution willbe passed through 100 the tube 46 from the tube 40 so that when air isforced through the tube 40 from the tube 41, it will rush past the port45 and cause a shower of bubbles to be created at the free end 42 of thetube 40.

I claim:

A bubble blower comprising a reservoir adapted to contain a soapsolution, a tube adapted to have air forced therethrough; a stem at oneend being in communication with the reser- 110 voir, the opposite end ofthe stem having restricted communication with the tube intermediate theends thereof so that the soap solution will be fed directly tothe'stream of air and transversely to the path of the air through the115 tube, the tube being free from restrictions and having substantiallythe same cross sectional area throughout the length thereof.

HARVEY LYNN BLOXOM.

